3. Which of the following could not be a correlation coefficient: A) 2.7 B) -27

Question

3. Which of the following could not be a correlation coefficient: A) 2.7 B) -27 C) .27 d) 0 Routine physical examinations are conducted annually as part of a health service program for the employees. It was discovered that 8% of the employees needed corrective shoes, 15% needed major dental work and 3% needed both corrective shoes and major dental work. What is the probability that an employee selected at random will need either corrective shoes or major dental work? A) 0.20 B) 0.25 C) 0.50 D) 1.00 E) None of the above 4.

Explanation / Answer

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3)

If the correlation is 0, this simply means there is no relationship between the two variables. The strength of the relationship varies in degree based on the value of the correlation coefficient. For example, a value of 0.2 indicates there is a positive relationship between the two variables, but it is weak.

A correlation coefficient cant be greater than 1

So, option A

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